TWI256790B - Process of synchronization in the time and frequency domain of multiple modems in a transmission system with OFDM modulation - Google Patents

Process of synchronization in the time and frequency domain of multiple modems in a transmission system with OFDM modulation

Info

Publication number
TWI256790B
TWI256790B TW093100683A TW93100683A TWI256790B TW I256790 B TWI256790 B TW I256790B TW 093100683 A TW093100683 A TW 093100683A TW 93100683 A TW93100683 A TW 93100683A TW I256790 B TWI256790 B TW I256790B
Authority
TW
Taiwan
Prior art keywords
modems
frequency
synchronization
time
synchronisation
Prior art date
Application number
TW093100683A
Other languages
Chinese (zh)
Other versions
TW200503461A (en
Inventor
Claret Jorge Vicente Blasco
Insua Juan Carlos Riveiro
Molinero Salvador Iranzo
Original Assignee
Diseno Sistemas Silicio Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Diseno Sistemas Silicio Sa filed Critical Diseno Sistemas Silicio Sa
Publication of TW200503461A publication Critical patent/TW200503461A/en
Application granted granted Critical
Publication of TWI256790B publication Critical patent/TWI256790B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/264—Pulse-shaped multi-carrier, i.e. not using rectangular window
    • H04L27/26416—Filtering per subcarrier, e.g. filterbank multicarrier [FBMC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2649—Demodulators
    • H04L27/26534—Pulse-shaped multi-carrier, i.e. not using rectangular window
    • H04L27/2654—Filtering per subcarrier, e.g. filterbank multicarrier [FBMC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2669—Details of algorithms characterised by the domain of operation
    • H04L27/2671—Time domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2669—Details of algorithms characterised by the domain of operation
    • H04L27/2672—Frequency domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2675—Pilot or known symbols

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)

Abstract

A process of synchronization in the time and frequency domain of multiple modems in a transmission system with OFDM modulation, applicable to two-way communication over the electricity network between different modems connected to the same electricity network so as to provide an estimation of the start of the OFDM symbols in reception and the frequency error of the local oscillators in the modems, including the generation of synchronization sequences that are transmitted over the electricity network and the sending of these synchronisation sequences over the same channel used for the sending of data, where said channel is determined by a connection between one modem and all the other modems, characterized because it comprises: breaking down the received signals that contain the data and synchronisation sequences in various frequency bands or ranges; detecting the synchronisation sequences in each frequency range or band in reception by means of applying a synchronisation algorithm in time to estimate in each frequency band, the start of the OFDM symbols and the frequency error of the local oscillators on the basis of this algorithm; combining the estimations obtained in each frequency band.
TW093100683A 2003-01-10 2004-01-12 Process of synchronization in the time and frequency domain of multiple modems in a transmission system with OFDM modulation TWI256790B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200300052A ES2212744B2 (en) 2003-01-10 2003-01-10 SYNCHRONIZATION PROCEDURE IN THE DOMAIN OF TIME AND FREQUENCY OF MULTIPLE EQUIPMENT IN A TRANSMISSION SYSTEM WITH OFDM MODULATION.

Publications (2)

Publication Number Publication Date
TW200503461A TW200503461A (en) 2005-01-16
TWI256790B true TWI256790B (en) 2006-06-11

Family

ID=32695828

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093100683A TWI256790B (en) 2003-01-10 2004-01-12 Process of synchronization in the time and frequency domain of multiple modems in a transmission system with OFDM modulation

Country Status (17)

Country Link
US (2) US8385434B2 (en)
EP (1) EP1583267B1 (en)
JP (1) JP2006515735A (en)
KR (1) KR101083795B1 (en)
CN (1) CN1723648A (en)
AT (1) ATE389267T1 (en)
AU (1) AU2004204595A1 (en)
BR (1) BRPI0406716A (en)
CA (1) CA2512920A1 (en)
DE (1) DE602004012381T2 (en)
EA (1) EA007858B1 (en)
ES (2) ES2212744B2 (en)
IL (1) IL169272A0 (en)
MX (1) MXPA05006896A (en)
PT (1) PT1583267E (en)
TW (1) TWI256790B (en)
WO (1) WO2004064278A1 (en)

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CN100417048C (en) * 2005-10-18 2008-09-03 中兴通讯股份有限公司 Method and device for increasing synchronous detection performance in synchronous CDMA system
ES2326054B1 (en) * 2006-04-04 2010-07-05 Diseño De Sistemas En Silicio S.A. PROCEDURE FOR SIMULTANEOUS TRANSMISSION IN TIME AND FREQUENCY OF MULTIPLE DATA COMMUNICATIONS THROUGH MODULATIONS OFDM.
KR100843340B1 (en) * 2006-09-29 2008-07-03 한국전자통신연구원 Apparatus and method for advanced GCL sequence detection in Wireless communication system
US8249178B2 (en) * 2007-05-25 2012-08-21 Panasonic Corporation Multicarrier transmitter and multicarrier receiver
CN101083508B (en) * 2007-07-19 2010-06-02 清华大学 OFDM modulation system performance test method based on low peak-valley ratio sequence transmission
US8194799B2 (en) * 2009-03-30 2012-06-05 King Fahd University of Pertroleum & Minerals Cyclic prefix-based enhanced data recovery method
CN102571670B (en) * 2012-01-12 2014-08-20 北京邮电大学 Method and device for multidimensional coded modulation of orthogonal frequency division multiplexing (OFDM) system
EP2775682B8 (en) 2013-03-04 2019-07-24 Rohde & Schwarz GmbH & Co. KG Measuring device and method for frame start detection
CN103441734B (en) * 2013-07-02 2016-03-23 重庆邮电大学 MDFT filter bank multicarrier modulation system and Optimization Design thereof
US9608905B1 (en) 2013-07-19 2017-03-28 Marvell International Ltd. Packet preamble and symbol boundary detection
KR102074291B1 (en) 2016-11-09 2020-02-06 엘지전자 주식회사 Method and apparatus for transmitting synchronization signal
RU191451U1 (en) * 2019-04-04 2019-08-06 Публичное акционерное общество "Научно-производственное объединение "Алмаз" имени академика А.А. Расплетина" (ПАО "НПО "Алмаз") SYNCHRONIZER
CN112054820B (en) 2019-06-06 2021-08-17 天地融科技股份有限公司 Method and apparatus for transmitting and receiving data using power line

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Also Published As

Publication number Publication date
BRPI0406716A (en) 2005-12-20
EP1583267A1 (en) 2005-10-05
MXPA05006896A (en) 2005-08-16
EA007858B1 (en) 2007-02-27
ES2303627T3 (en) 2008-08-16
ES2212744B2 (en) 2005-03-16
PT1583267E (en) 2008-06-23
WO2004064278A1 (en) 2004-07-29
US20130163652A1 (en) 2013-06-27
IL169272A0 (en) 2007-07-04
JP2006515735A (en) 2006-06-01
US8385434B2 (en) 2013-02-26
US8837617B2 (en) 2014-09-16
KR101083795B1 (en) 2011-11-18
DE602004012381D1 (en) 2008-04-24
DE602004012381T2 (en) 2009-12-24
KR20050100609A (en) 2005-10-19
ES2212744A1 (en) 2004-07-16
US20060140292A1 (en) 2006-06-29
AU2004204595A1 (en) 2004-07-29
EA200501060A1 (en) 2006-04-28
CN1723648A (en) 2006-01-18
EP1583267B1 (en) 2008-03-12
TW200503461A (en) 2005-01-16
CA2512920A1 (en) 2004-07-29
ATE389267T1 (en) 2008-03-15

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